#!/usr/bin/python3
# -*- coding: utf-8 -*-
try:
    import Tkinter as tk  # Python 2
except ImportError:
    import tkinter as tk  # Python 3

root = tk.Tk()
top = tk.Toplevel(root)
top.overrideredirect(1)  # removes border but undesirably from taskbar too (usually for non toplevel windows)
root.attributes("-alpha", 0.0)

# toplevel follows root taskbar events (minimize, restore)


def onRootIconify(event): top.withdraw()
def onRootDeiconify(event): top.deiconify()

root.bind("<Unmap>", onRootIconify)
root.bind("<Map>", onRootDeiconify)


window = tk.Label(master=top, text='aaaaaaaaaa')
window.mainloop()